Article
Energy & Fuels
Andreia D. Santos, Joao R. Silva, Luis M. Castro, Rosa M. Quinta-Ferreira
Summary: This study evaluates the methane production potential of pig slurry anaerobic digestion using two different substrate to inoculum ratios (SIR 0.65 and 1) and compares it with theoretical predictions. The results show that a higher SIR of 1 produced more biogas with higher methane content compared to a lower SIR of 0.65, with an SMP of 0.568 NL CH4/g VS and an average methane content of 83% achieved in the experiment. The estimated value presented a deviation of just 2.96% during the assay with a SIR of 1.
Article
Environmental Sciences
Naassom Wagner Sales Morais, Milena Maciel Holanda Coelho, Amanda de Sousa e Silva, Francisco Schiavon Souza Silva, Tasso Jorge Tavares Ferreira, Erlon Lopes Pereira, Andre Bezerra dos Santos
Summary: This study aimed to evaluate the methane production potential of six agro-industrial wastewaters and determine the most suitable kinetic models for simulating their methane production. The results showed that residual glycerol had the highest methanization potential, and exponential kinetic models were more efficient in describing methane production of more soluble substrates.
ENVIRONMENTAL POLLUTION
(2021)
Article
Chemistry, Applied
Yangdong He, Bin Song, Xingsheng Jing, Yin Zhou, Honggang Chang, Wei Yang, Zeai Huang
Summary: The methane pyrolysis system using the melting method coupled with chemical looping combustion effectively addresses the issues of catalyst deactivation and indirect greenhouse gas emissions. It achieves improved thermodynamic and economic feasibility, with reduced CO2 emissions and lower levelized cost of hydrogen compared to conventional methods.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Environmental Sciences
Tingting Hou, Jiamin Zhao, Zhongfang Lei, Kazuya Shimizu, Zhenya Zhang
Summary: This study found that supplementation of N-2 and Air-nanobubble water can significantly enhance the efficiency of hydrogen and methane production in the two-stage anaerobic digestion of food waste. Air-NBW has a promoting effect on both hydrogen and methane production stages, while N-2-NBW only has a positive impact on the hydrogen production stage.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Chemistry, Physical
Leonor Sillero, Rosario Solera, Montserrat Perez
Summary: This study aims to investigate the methane generation potential of different samples from the dark acid fermentation of sewage sludge and the effect of high ammonia concentrations in poultry manure when used as a co-substrate. Results show that the addition of poultry manure improves methane production and the mixture of sewage sludge, wine vinasse, and poultry manure has the highest purification percentages and methane yield. The presence of poultry manure also increases microbial concentration during the BMP test.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Microbiology
Sato Hasaka, Saki Sakamoto, Katsuhiko Fujii
Summary: This study examined the adaptability of seed microorganisms in producing biogas from food processing wastes. The results demonstrated that the heterogeneity of bacterial members in the seed microflora facilitated quick adaptation to various types of food processing wastes and the hydrolysis of carbohydrates and proteins using specific enzymes. Compared to animal-derived wastes, wastes from plants, fruits, and crops were more suitable for hydrogen production.
Article
Engineering, Environmental
Qiuying Wang, Yuanyuan Wang, Jiabao Sun, Shaohua Sun, Xiaomei Zhu, Bing Sun
Summary: This study aims to use microwave plasma technology for hydrogen production from simulated seawater. By introducing methane, a gas-liquid two-phase discharge is achieved to improve hydrogen production and overcome the problem of unstable discharge. The experiment shows that the conductivity of the solution significantly affects the plasma chemical reaction, and the catalysis of chloride ions is also important. This method proves the huge potential for hydrogen production from seawater without a catalyst and provides a new reference for the subsequent hydrogen production industry.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Martin Keller
Summary: Pyrolysis of natural gas to produce H-2 and solid carbon has low CO2 emissions but high CH4 emissions. The climate benefit of this process depends on plant location and CH4 emission reduction speed, with certain states having higher potential. Without fast action on CH4 emission mitigation, the climate benefit is minimal. A tool developed in this study can help estimate the climate impact in different scenarios and locations.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Thermodynamics
D. T. Balanescu, V. M. Homutescu
Summary: This study analyzes the carbon emission mitigation and latent heat recovery potential of condensing boilers using a mixture of methane and hydrogen as fuel. The results demonstrate that increasing the hydrogen volumetric fraction can improve the efficiency of the condensing boiler and save additional latent energy.
APPLIED THERMAL ENGINEERING
(2021)
Review
Energy & Fuels
Bashirul Haq, Nasiru Salahu Muhammed, Jishan Liu, Hui Tong Chua
Summary: This critical review comprehensively examines the technical aspects of carbon dioxide enhanced gas recovery (CO2-EGR) for hydrogen production. The study finds that high pressure and moderate injection rates can improve EGR, while heterogeneous reservoirs tend to yield lower recovery rates. Factors such as flow rate, pressure, temperature, connate water, brine saturation, shale content, and the type of fluid phase used for injection significantly affect the molecular diffusivity of the injected gas and subsequent recovery outcomes. Simulation studies highlight the potential of injecting various gases with proper reservoir operation timing to enhance recovery and enable sustainable hydrogen production.
Article
Thermodynamics
Wenjun Zhou, Weixing Zhou, Huayu Qiu, Dun Li, Yu Zhang, Muhammad Sajjad Ahmad, Kawi Sibudjing
Summary: This study investigates the performance of a Ni-coated MoS2 membrane in the methane pyrolysis process. The membrane demonstrates excellent catalytic and separation performance due to its increased specific surface area and reduced pore size. The Ni coating attracts methane, destabilizes the C-H bond, and promotes methane deep crack, while the MoS2 membrane blocks methane and drives H proton transportation for H2 formation. This work provides guidance for bifunctional membranes in methane pyrolysis, with potential to reduce energy cost and greenhouse gas emissions.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Chemistry, Physical
Mehran Dadsetan, Mohammad Fawaz Khan, Mehdi Salakhi, Erin R. Bobicki, Murray J. Thomson
Summary: A new method of CO2-free hydrogen production via non-plasma methane pyrolysis using microwaves is introduced in this study. The modular pyrolysis system can be built anywhere with access to natural gas and electricity, enabling distributed hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Environmental Sciences
M. Fabrizio Ortiz-Sanchez, German Cuevas-Rodriguez
Summary: The usage of fossil fuels and lack of wastewater treatment in Mexico can be addressed by developing wastewater treatment technologies that incorporate energy recovery. A systematic review based on the PRISMA methodology was conducted to identify and review studies on energy recovery using wastewater as a substrate in Mexico. The results show that methane, hydrogen, and electricity are the most researched energy recovery products, with up-flow anaerobic sludge bed (UASB) reactors and microbial fuel cells (MFCs) being the preferred technologies for methane and electricity production respectively. Methane-recovering technologies in Mexican peer-reviewed studies showed higher energy production per kgCOD removed compared to hydrogen recovery and electricity production.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Review
Chemistry, Physical
Mark McConnachie, Muxina Konarova, Simon Smart
Summary: This review summarizes recent developments and future perspectives in COx-free hydrogen production through methane pyrolysis. It discusses in detail the thermal and catalytic cracking of methane into hydrogen and carbon. Various types of solid and liquid catalysts are reviewed in terms of their performance in hydrogen selectivity, methane conversion, and deactivation. Although some pilot-scale technologies have been discussed, large-scale industrialization is hindered by challenges such as rapid solid catalyst deactivation, low-priced carbon by-product of molten catalysts, harsh reactor material conditions, and the performance of stable molten catalysts. For catalytic methane cracking in molten catalysts (salt or metal), significant advancements in catalyst development, product separation, and reactor design are still needed to commercialize methane pyrolysis for hydrogen production. To provide guidance for future research, this review specifically focuses on catalyst design, recent developments in molten salt-based methane cracking, and reactor and process design.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
L. Bartolucci, S. Cordiner, V. Mulone, C. Tatangelo, M. Antonelli, S. Romagnuolo
Summary: In recent decades, the impacts of climate change due to greenhouse gas emissions have become more severe, prompting international authorities to seek green solutions for sustainable economic development. One such solution is the reduction of fossil fuel usage in the transportation sector, with hydrogen emerging as a promising alternative due to its potential as an emission-free fuel when produced using renewable energy sources. However, there are several barriers to overcome, including production costs and the lack of distribution and storage infrastructure. This study proposes a multi-hub configuration for hydrogen production, combining on-site PV-powered electrolysis and centralized steam methane reforming. The results show that the size of the refueling station significantly affects economic performance, with larger stations offering greater benefits such as a reduction of up to 40% in the Levelized Cost of hydrogen. The synergistic effects of SMR and electrolyzer enable limited CO2 emissions per unit mass of hydrogen, and interconnecting multiple stations can further enhance environmental benefits.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Environmental Sciences
Gianpaolo Sabia, Marco Ferraris, Alessandro Spagni
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2016)
Article
Engineering, Environmental
Alessandro Spagni, Marco Ferraris, Stefania Casu
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
(2015)
Article
Engineering, Environmental
Luca Alibardi, Nicoletta Bernava, Raffaello Cossu, Alessandro Spagni
CHEMICAL ENGINEERING JOURNAL
(2016)
Article
Environmental Sciences
Mubashir Saleem, Luca Alibardi, Maria Cristina Lavagnolo, Raffaello Cossu, Alessandro Spagni
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2016)
Article
Engineering, Environmental
Mubbshir Saleem, Maria Cristina Lavagnolo, Alessandro Spagni
CHEMICAL ENGINEERING JOURNAL
(2018)
Article
Environmental Sciences
Mubbshir Saleem, Alessandro Spagni, Luca Alibardi, Alberto Bertucco, Maria Cristina Lavagnolo
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2018)
Article
Agricultural Engineering
Lorenzo Bertin, Selene Grilli, Alessandro Spagni, Fabio Fava
BIORESOURCE TECHNOLOGY
(2013)
Article
Agricultural Engineering
Wendy Mussoline, Giovanni Esposito, Piet Lens, Alessandro Spagni, Andrea Giordano
BIORESOURCE TECHNOLOGY
(2013)
Article
Agricultural Engineering
Luca Alibardi, Raffaello Cossu, Mubashir Saleem, Alessandro Spagni
BIORESOURCE TECHNOLOGY
(2014)
Article
Agricultural Engineering
Andrea Giordano, Valentina Sarli, Maria Cristina Lavagnolo, Alessandro Spagni
BIORESOURCE TECHNOLOGY
(2014)
Article
Engineering, Environmental
Gianpaolo Sabia, Marco Ferraris, Alessandro Spagni
CHEMICAL ENGINEERING JOURNAL
(2013)
Article
Engineering, Environmental
Alessandro Spagni, Giuliana Psaila, Andrea Rizzo
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
(2014)
Article
Engineering, Chemical
Gianpaolo Sabia, Marco Ferraris, Alessandro Spagni
SEPARATION AND PURIFICATION TECHNOLOGY
(2014)
Article
Environmental Sciences
Mubbshir Saleem, Edoardo Masut, Alessandro Spagni, Maria Cristina Lavagnolo
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2019)
Article
Engineering, Environmental
Mubashir Saleem, Luca Alibardi, Raffaello Cossu, Maria Cristina Lavagnolo, Alessandro Spagni
CHEMICAL ENGINEERING JOURNAL
(2017)
Article
Agricultural Engineering
Yinping Xiang, Meiying Jia, Rui Xu, Jialu Xu, Lele He, Haihao Peng, Weimin Sun, Dongbo Wang, Weiping Xiong, Zhaohui Yang
Summary: This study investigated the impact of the non-antibiotic pharmaceutical carbamazepine on antibiotic resistance genes (ARGs) during anaerobic digestion. The results showed that carbamazepine induced the enrichment of ARGs and increased the abundance of bacteria carrying these genes. It also facilitated microbial aggregation and intercellular communication, leading to an increased frequency of ARGs transmission. Moreover, carbamazepine promoted the acquisition of ARGs by pathogens and elevated their overall abundance.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Weixin Zhao, Tianyi Hu, Hao Ma, Dan Li, Qingliang Zhao, Junqiu Jiang, Liangliang Wei
Summary: This review summarizes the effects and potential mechanisms of biochar on microbial behavior in AD systems. The addition of biochar has been found to promote microbial colonization, alleviate stress, provide nutrients, and enhance enzyme activity. Future research directions include targeted design of biochar, in-depth study of microbial mechanisms, and improved models.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Christina Karmann, Anna Magrova, Pavel Jenicek, Jan Bartacek, Vojtech Kouba
Summary: This review assesses nitrogen removal technologies in reject water treatment, highlighting the differences in environmental impacts and economic benefits. Partial nitritation-anammox shows potential for economic benefits and positive environmental outcomes when operated and controlled properly.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Wei-Hao Huang, Ying-Ju Chang, Duu-Jong Lee
Summary: This study modified pinecone biochar with layered double hydroxide (LDH) to enhance its adsorption capacity for heavy metal and phosphate ions. The LDH-biochar showed significantly improved adsorption capacities for Pb2+ and phosphate, and a slight increase for Cu2+ and Co2+. The LDH layer enhanced the adsorption through various mechanisms.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Chao Song, Fanfan Cai, Shuang Yang, Ligong Wang, Guangqing Liu, Chang Chen
Summary: This paper developed a machine learning model to predict the biochemical methane potential during anaerobic digestion. Model analysis identified lignin content, organic loading, and nitrogen content as key attributes for methane production prediction. For feedstocks with high cellulose content, early methane production is lower but can be improved by prolonging digestion time. Moreover, lignin content exceeding a certain value significantly inhibits methane production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sang Min Lee, Ju Young Lee, Ji-Sook Hahn, Seung-Ho Baek
Summary: This study successfully developed an efficient platform strain using Yarrowia lipolytica for the bioconversion of renewable resources into adipic acid, achieving a remarkable increase in production level.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sefkan Kendir, Matthias Franzreb
Summary: This study presents a novel approach using magnetic separation to efficiently harvest freshwater microalgae, Chlorella vulgaris. By combining pH-induced calcium phosphate precipitation with cheap natural magnetite microparticles, harvesting efficiencies up to 98% were achieved in the model medium.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Ishaq Kariim, Ji-Yeon Park, Wajahat Waheed Kazmi, Hulda Swai, In-Gu Lee, Thomas Kivevele
Summary: The impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and yield enhancement of biocrudes was investigated. The results showed that under appropriate conditions, biocrudes with high energy and low oxygen content can be obtained, indicating a high potential for utilization.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xiyue Zhang, Xiyao Li, Liang Zhang, Yongzhen Peng
Summary: Intermittent aeration is an innovative approach to enhance nitrogen removal in low carbon-to-nitrogen ratio municipal sewage, providing an efficient strategy for the continuous plug-flow AOA process.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xu Yang, Mahmoud Mazarji, Mengtong Li, Aohua Li, Ronghua Li, Zengqiang Zhang, Junting Pan
Summary: This study investigated the impact of magnetite on the nitrogen cycle of pig manure biostabilisation. The addition of magnetite increased N2O emissions and decreased NH3 emissions during composting. It also increased the total nitrogen content but should be considered for its significant increase in N2O emissions in engineering practice.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Ty Shitanaka, Haylee Fujioka, Muzammil Khan, Manpreet Kaur, Zhi-Yan Du, Samir Kumar Khanal
Summary: The market value of microalgae has exponentially increased in the past two decades, thanks to their applications in various industries. However, the supply of high-value microalgal bioproducts is limited due to several factors, and strategies are being explored to overcome these limitations and improve microalgae production, thus increasing the availability of algal-derived bioproducts in the market.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Martin Kerner, Thorsten Wolff, Torsten Brinkmann
Summary: The efficiency of using enriched CO2 from flue gas for large-scale production of green microalgae has been studied. The results show that the use of membrane devices and static mixers can effectively improve the CO2 recovery rate and maintain the suitable pH and temperature during cultivation, achieving a more economical and sustainable microalgae production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rui Ma, Ji Li, Rd Tyagi, Xiaolei Zhang
Summary: This review summarizes the microorganisms capable of using CO2 and CH4 to produce PHAs, illustrating the production process, factors influencing it, and discussing optimization techniques. It identifies the challenges and future prospects for developing economically viable PHAs production using GHGs as a carbon source.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Bing Wang, Peng Zhang, Xu Guo, Xu Bao, Junjie Tian, Guomin Li, Jian Zhang
Summary: The addition of zeolite in the co-composting of chicken manure and straw significantly reduced the emissions of ammonia and N2O, and increased the nitrate content. Zeolite also promoted the abundance of nitrification genes and inhibited the expression of denitrification genes.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen
Summary: This study investigated the operation of a 1000L microalgae-based membrane photobioreactor system for continuous secondary wastewater treatment. The research focused on a green microalgae strain called Desmodesmus sp. The study aimed to understand key trends and optimization strategies by conducting experiments in both summer and winter seasons. The findings showed that maintaining low cell concentrations during periods of light inhibition was beneficial for nutrient uptake rates. Effective strategies for enhancing algae-based wastewater treatment included cell mass recycling and adjusting dilution rates based on light availability.
BIORESOURCE TECHNOLOGY
(2024)
